Question
My whole garden was destroyed by large white grubs. I live in central Minnesota and am looking for a way to rid them.  It started with my potatoes turn in brown and when I dug them up to check, there were 3-4 grubs under each plant and most of the potatoes were partially eaten. Then the rest of my plants followed.  No beets, tomatoes gone, even my rubarb turned brown and fell over.  As I dug to plant flowers in a different location, with each shovel full brang 2-3 grubs. Please help.  Melanie

Answer
Grub-ex is by far the best product on the market for an immediate resolution to your grub problem. The downside to this product, as well as diazinon, is that they are only effective the year they are applied. The problem will most likely reoccur next year, making this a very expensive proposition. They also are harsh chemicals that will kill off beneficial insects as well. I would never apply either product in the vegetable garden due to their toxicity.

The best natural control for grubs is Milky Spore. This is an organic product which kills only the grubs, while sparing earthworms. Another benefit to milky spore is that it lasts for up to 15 years without needing to be reapplied. The only downside is that it can be costly.  But given the fact you only need to apply it once every 15-20 years, it is the least expensive alternative over the long term.

Attached is a website which will give you additional information, as well as a source from which to purchase the product.

http://homeharvest.com/milkspore.htm

I hope this information helps. Please write again if I can ever be of assistance.

Regards,

Mike